Support creation of toplevel mus::Windows on separate displays

services/ui/public/cpp/window_tree_client.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "services/ui/public/cpp/window_tree_client.h"
 
 #include <stddef.h>
-
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "services/service_manager/public/cpp/connector.h"
 #include "services/ui/common/util.h"
 #include "services/ui/public/cpp/in_flight_change.h"
 #include "services/ui/public/cpp/input_event_handler.h"
@@ skipping 477 matching lines @@
   }
   return root;
 }
 
 Window* WindowTreeClient::NewWindowImpl(
     NewWindowType type,
     const Window::SharedProperties* properties) {
   DCHECK(tree_);
   Window* window =
       new Window(this, MakeTransportId(client_id_, next_window_id_++));
+
   if (properties)
     window->properties_ = *properties;
+
   AddWindow(window);
 
   const uint32_t change_id =
       ScheduleInFlightChange(base::MakeUnique<CrashInFlightChange>(
           window, type == NewWindowType::CHILD
                       ? ChangeType::NEW_WINDOW
                       : ChangeType::NEW_TOP_LEVEL_WINDOW));
   mojo::Map<mojo::String, mojo::Array<uint8_t>> transport_properties;
   if (properties) {
     transport_properties =
         mojo::Map<mojo::String, mojo::Array<uint8_t>>::From(*properties);
   }
   if (type == NewWindowType::CHILD) {
+    //   LOG(ERROR) << "\n\n  WindowTreeClient::NewWindowImpl
+    //   transport_properties ";
+    // for (auto i = transport_properties.begin(); i !=
+    // transport_properties.end(); ++i)
+    //   {
+    //     LOG(ERROR) << "\n transport_properties->first " << i->first;
+    //     // do something with it here like adding it to a vector
+    //   }
+
     tree_->NewWindow(change_id, server_id(window),
                      std::move(transport_properties));
   } else {
     roots_.insert(window);
     tree_->NewTopLevelWindow(change_id, server_id(window),
                              std::move(transport_properties));
   }
   return window;
 }
 
@@ skipping 907 matching lines @@
     Window* window,
     const gfx::Vector2d& offset,
     const gfx::Insets& hit_area) {
   if (window_manager_internal_client_) {
     window_manager_internal_client_->SetUnderlaySurfaceOffsetAndExtendedHitArea(
         server_id(window), offset.x(), offset.y(), hit_area);
   }
 }
 
 }  // namespace ui